碳烯

Its mechanism is the use of anthraquinone in alkali conditions off proton surface forming 10 more stable carbon anion face, but because carbon anion and oxygen ion exist between testosterone and enolate type each other changes, cause reaction product complex, at least five, reaction selectivity, product yield, separation difficulties, and product purity is not high, therefore, using the type and quantity of alkali, phase transfer catalyst type, solvent, to optimize the selection process conditions so as to improve the yield target product.

其机理是利用蒽酮在碱存在的条件下脱去氢质子面形成10位较稳定的碳负离子面进行，但是因为碳负离子和氧负离子之间存在酮式和烯醇式的互变，导致反应复杂，产物至少有五种，反应选择性差，产物分离困难，产率低，且产品纯度不高，因此，利用对碱的种类和量的多少，相转移催化剂的种类，反应溶剂的选择，来优化反应工艺条件从而提高目标产物的产率。

Two kinds of high alcohol acrylates were prepared by octadecyl alcohol and hexadecyl branched alcohol,respectively.The polymers of depressants were prepared by maleic anhydride-styrene-higher alcohol acrylates.By using these depressants,the pour points of the Liaohe crude oils were lowered form 30℃ to 20℃.

分别采用碳十八直链醇、碳十六支链醇与丙烯酸合成烷基酯，将烷基酯再与顺丁烯二酸酐、苯乙烯聚合制备的三元共聚物，对辽河油田的高凝原油的降凝效果进行了评价，实验发现这两种聚合物对凝固点为30℃原油都具有较好的效果，降幅可达10℃左右，但对凝固点为41℃的原油较差分别为3℃和6℃。

The experimental condition of α-hexylene prepared by o-hexanol dehydration employing a zinc aluminate catalyst was studied in this paper.

本文采用锌铝盐作为催化剂，对正己醇脱水制备α-己烯的实验条件进行了研究，以期能拓宽高碳醇的使用领域，对高碳醇的综合利用进行进一步探索。

Besides, the efficacious concentration of either morrhuic acid or sodium morrhuate was 0.1%, so they contained more docosahexaenoic acid and eicosapentaenoic acid and were ideal spermicides in vitro.

所以，含有较多廿二碳六稀酸、廿碳五烯酸的鱼肝油酸和它的钠称是较为理想的体外杀精子剂。

Assignments have been made on the spectra for all peaks of the Aliphatic and olefinic carbons using chemical shift corrective terms together with furukawa parameters.

本工作用~(13)C-NMR进行了研究，得到的聚合物的~(13)C-NMR图谱表明，聚合物的脂碳部分共有十一个共振峰，烯碳部分有九个峰。

In this dissertation, electrophilic reactions of Nitrosonium with imines, aza-Diels-Alder reactions of N-arylimines with a variety of electron rich olefinic compounds induced by NO~+, and photoreactions of N-nitrosodiphenylamine with aromatic amines were studied.

本文研究了：(1)NO~+与亚胺双健发生的亲电反应；(2)NO~+引发的芳香亚胺和富电子碳碳双键作为亲二烯体的氮杂Diels-Alder反应，高选择性地得到了一系列四氢喹啉的衍生物；(3)N—亚硝基二苯胺与芳香胺发生光化学反应得到了一系列偶氮苯类化合物。

The reaction of cyclic b-keto esters with CF3CO2ZnCH2I provides the corresponding ring-expanded products with the advantage of mild condition in moderate to good yields. A simple and efficient procedure has been developed for a variety of 1,3-diketones converted into the corresponding 1,4-diketones and trans-1,2-disubstituted cyclopropanols in high yields. In conclusion, this new type of organozinc reagents has been developed for many useful reaction in organic synthesis.

利用有机锌试剂所具有的双重特性，在新型的Baylis-Hillman反应中，可以直接与炔基酮和醛反应一锅制得多官能团的三取代的顺式烯；在b-酮酯化合物的扩环反应中，取得了重要进展，得到了增加一个碳的扩环产物，&一步法&合成，反应条件温和、环境友好；在1，3-二酮分子中成功地插入1个碳，合成出1，4-二酮和环丙醇，为现代有机合成提供了新的合成方法，具有良好的应用前景。

Itis main raw material of tetradecane,others applications include:liquid mosquito-repellent incense,hydraulic oil of large-scale punch,paraffin chloride,anticorrosive paint.powder paint,and top-grade melt adhesive,its derivative is chainpoly-anhydride of 14c binary acid,it is very useful chenical and medical intermediate,it can be used ad curing agent of epoxy and propylene resin,polyester improved additive etc.

外观与性状无色液体，溶解性不溶于水，可混溶于乙醇、乙醚是生产十四碳烷烃的主要原料，其它应用包括：液体蚊香、大型冲压机的液压油、氯化石蜡、防腐涂料、粉末涂料也可用作高档热熔胶，其衍生产品十四碳二元酸的直链聚酐，是一种非常有用的化工及医药中间体，可用于环氧及丙烯树脂固化剂、聚酯改性添加剂等等。

The stable carbon isotope s of saturated hydrocarbon and specific compound composition of the oil from the trachyte near the crater are relatively low,and the negative anomalies of the .

通过对欧利坨子原油地球化学特征的研究，发现原油性质的差异同储集层与火山口的相对位置有着密切的关系，在火山口附近的粗面岩储集层中，原油的饱和烃及其单体碳同位素值偏轻，类异戊二烯烃的碳同位素负异常基本消失，原油的CPI和OEP值较低(平均为1·21和1·06)。

The results available now indicate that glass-like carbon synthesized from phenolic resin is a non-graphitizing carbon, and consists of both sp 2-hybridized carbon atoms that form imperfect graphite structure and sp 3-hybridized carbon atoms that are due to the presence of disordered carbon; and in the fullerene-related structure of glass-like carbon, there exist some pentagons and heptagons carbon rings.

玻璃炭作为一种特殊炭材料已广泛应用于许多领域，其制备、性质、应用以及基本结构的研究已经取得了很大的进展，已有的研究结果表明酚醛树脂基玻璃炭是一种典型的非石墨化炭材料，由 sp2杂化态碳原子和 sp3杂态碳原子组成，且在其类富勒烯结构中存在五元环和七元环。

For a big chunk of credit-card losses; the number of filings (and thus charge-off rates) would be rising again, whether

年美国个人破产法的一个改动使得破产登记急速下降，而后引起了信用卡大规模的亏损。

Eph. 4:23 And that you be renewed in the spirit of your mind

弗四23 而在你们心思的灵里得以更新